The analog input subdevice supports Comedi asynchronous commands that
use Comedi's 16-bit sample format. However, the calls to
`comedi_buf_write_samples()` are passing the address of a 32-bit integer
variable. On bigendian machines, this will copy 2 bytes from the wrong
end of the 32-bit value. Fix it by changing the type of the variable
holding the sample value to `unsigned short`.
Fixes: de88924f67d ("staging: comedi: me4000: use comedi_buf_write_samples()")
Cc: <stable@xxxxxxxxxxxxxxx> # 3.19+
Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx>
---
drivers/staging/comedi/drivers/me4000.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/comedi/drivers/me4000.c b/drivers/staging/comedi/drivers/me4000.c
index 726e40dc17b6..0d3d4cafce2e 100644
--- a/drivers/staging/comedi/drivers/me4000.c
+++ b/drivers/staging/comedi/drivers/me4000.c
@@ -924,7 +924,7 @@ static irqreturn_t me4000_ai_isr(int irq, void *dev_id)
struct comedi_subdevice *s = dev->read_subdev;
int i;
int c = 0;
- unsigned int lval;
+ unsigned short lval;
if (!dev->attached)
return IRQ_NONE;
--
2.30.0
